Febdbeigk dudley



- L UNrrED STATES PATENT Erica movable key.

FREDERICK DUD'LEY, or EUeEnn CITY, censor.

sAsH-FASTl-:Na

SPECIFICATION forming part of Letters Patent N- 233,365, dated August14, 1853.

Application filed January 30, 1853. (Model.)

Vthey are closed, and also to secure them in any desired position whenthey are `partly or entirely opened. Y

My invention consists in certain peculiarities of construction, to behereinafter described, and especially in a double bolt and reln thedrawings, Figure l shows the windowsash with the lock or stop in thesame, the key inserted, andthe bolts projecting. Fig. 2 shows the plateto be inserted in the window jamb or frame, with the slots or openingsin the same lto receive the bolts of the lock. Fig. 3 is a perspectiveview of the lock detached, and Fig. 4 shows the key.

My invention consists in a window stop or lock provided with two boltshaving beveled points or ends, each having an action independent of theother, which are actuated by springs in the lock and retracted by aremova ble key, so that when the key is withdrawn the window will besecured in the position in which it is placed, whether closed or opened.

- Said lock is intended to be embedded in the edge of the uprightsash-frame, with the bolts projecting to catch automatically in theopenings in the ymetallic platewhich is sunk in the window-casing, sothat 'as the sash is raised or lowered the bolts, actuated by thesprings of the lock, will catch in the slots or openings in the plateand hold the window at any desired position, and when the key is removedthe window will be locked, whether it be raised or lowered, and anychange ci its position will be impossible without using the key. rlhebeveled ends oi' 'the bolts face inward and to! ward each other, so thatit is impossible to In the drawings, Ais the upright sash-frame, whichcontains the lock, and B is the plate inserted and secured in the window-frame lt provided with ais'eries of openings, Zr, ar-

have invented certain new and useful Imranged in pairs and of size justequal to the bolts.

C is the face of the lock, which is arranged flush with the sash-frame Aand secured to it by screws, and having two openings-in which the boltsmove.

D l) are the two bolts which project from the face or end of the lock,and are actuated by springs in the usual manner. They are beveled, sothat they will readily enter the openings b in the plate B.

E is the key, which, when removed, leaves the window secured, whetherclosed or partly or entirely opened.

lVhenthe key is inserted in the key-hole, if turned up, it will, in theusual manner, retract the upper bolt, and the window may be raised, asthe bevel on the lower bolt causes it to slip out of its opening b inthe plate B, and the window being'raised tothe desired elevation, ,thebolts, actuated `by thesprings, will engage with the openings in theplate and hold the window at that elevation, and by removing the key thesash is held in that position and cannot be raised or lowered except bythe use of the key. Iffturned down, in likel manner the window may belowered.

In cases where a single beveled bolt is used, any considerable pressure.against the beveled edge will cause the bolt to spring back and bolt isused, when the window is raised rapidly, there is danger lest the boltshall pass the slot or opening in the window-casing; but by the use, asin my device, of two bolts acting independently and having their beveledends opposite each other, it will be impossible to release the same, asvthe pressure against onewill only bind the other more securely, ,and asthe moment the point reaches the opening in the plate it will begin toenter, it will be impossible to pass by the opening either in raising orlowering. i

lt will be seen that even if the glass be rehand inserted, it will beimpossible to raise the window when closed, and-if partly raised toadmit air its position cannot be changed.

This lock may be applied to either the lower or upper sash of a m'ndowwith the same re snlt.

release the window, and where a single square e moved from the sash by aburglar, and his A IOO ' I am aware that a single bolt actuated by a,spring or springs and retracted by a removable key has been hithertoused, and therefore I make no claim to such device or devices, broadly.

I am aware of the Patent No. 253,563yto Tyler and Atwood, and I desireto be understood as disclaiming such device, and I con cede the state ofthe art as found therein; but

IVhat I do claim as new and of my invention, and desire to secure byLetters Patent, 1s-

The combination, in a window or sash lock,

of the two independently-acting bolts D D, actuated by springs Withinthe lock and retracted by the key E, said bolts having their projectingends beveled in opposite directions, with the metallic plate B insertedand secured in the window-casing, and provided with a series ofopenings, in pairs, to receive the bolts, 2o

and a removable key, all as described.

" FREDERICK DUDLEY.

IVitnesses:

GEO. SWVAsHBURNn, H. C. HUMPHREY.

